Our Asters, about 3-5 years old, always prolific blooms in late summer/fall,...

Asked June 12, 2014, 7:27 PM EDT

Our Asters, about 3-5 years old, always prolific blooms in late summer/fall, is showing odd appearance on the upper stems; I have more pictures if you need them. Thank you, Patricia Liszewski

Hennepin County Minnesota

1 Response

Thank you for the question and the picture. I can't say for sure what is wrong with your aster plant. It might be aster yellows or four lined plant bug. Check this University of Minnesota publication, "What's wrong with my plant" http://www.extension.umn.edu/Garden/diagnose/ Click on perennials/annuals, and then Aster to see common aster plant problems. Here is another link to common aster problems http://extension.psu.edu/pests/plant-diseases/all-fact-sheets/aster-diseases.